US1160134A - Type-writing machine. - Google Patents

Description

A. J. BRIGGS.

TYPE WRITING MACHINE; APPLICATION FILED MAR. 4. 1914.

I Patented Nov. 16, 1915.

JWITNEESEE= HISATTDRLNEY ARTHUR J'. BRIGGS, OF SYRACUSE, NEW YORK, ASSIGNOR T0 REMINGTON TYPEWRITEB COMPANY, OF ILION, YORK, A CORPORATION OF NEW YORK.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Application filed March 4, 1914. Serial No. 822,298.

To all whom it may concern:

Be it known that I, ARTHUR J. BRIGGS, citizen of the United States, and resident of Syracuse, in the county of Onondaga, and State of New York, have invented .certam new and useful Improvements in' Type- Writing Machines, of which the following is a specification.

My present invention relates to type bars for typewriting machines and its principal object is to provide an improved type bar of an exceptionally cheap and simple construction.

Another object is to provide an economical and simple method or process by which my improved type bar may be manufac tured.

To the above and other ends my invention consists in the features of construction, combinations of devices and arrangements of parts hereinafter described and particularly pointed out in the claims.

In the-accompanying drawings, Figure 1 is a side elevation of one of my improved type bars. Fig. 2 is an enlarged fragmentary plan view of the same. Fig. 3 is an enlarged perspective view of a piece used in forming the head of the type bar. Fig. 4 is an enlarged perspective view of a type block or printing type. Fig. 5 is a .vertical sectional view taken on a plane indicated by the dotted line a: in Fig. 2. Fig. 6 is a transverse vertical sectional view taken on a plane indicated by the dotted line 3 in said Fig. 2.

Referring to the drawing, the body or shank 1 of the type bar is made of sheet metal stamped out of stock of suitable gage and formed with an opening 2 for the insertion of an individual type bar pivot or for mounting or stringing on a fulcrum wire, and with a small hole 3 for the actuating connection ,which may be of any suitable character. The head of the bar is formed in' part by a piece 4 which is originally separate from the body of the bar and is herein shown detached in Fig. 3. The piece 4 is preferably made of sheet metal of the same gage of stock as the body or shank, the blank end of the bar and the cross portion or bend being fitted against the outer end or extremity of the body 1. The U-shaped piece 4 is then suitably secured to the bar, preferably by the electric welding process which, is sometimes referred to as spot-welding, thus providing a solid head comprising three thicknesses or plies, the middle or inner ply being constituted by the body portion or shank of the bar, and the two outside plies by the sides of the U-shaped piece 4 and therefore being integral with each" other. Next the head is drilled centrally edgewise of or parallel with the three plies to provide a hole or perforation 6 that is adapted to receive the shank or stem 7 of a type block 8. This shank is round and preferably slightly tapered as shown clearly in Fig. 4 so that it may be secured in its socket or seat 6 by a driving fit, although any other suitable means or method of fixing the shank in the type bar may be employed if preferred. The drilled hole 6 may be tapered better to accommodate and hold more firmly the shank of the type if tapered. Said hole 6 is of a diameter which ordinarily is, at least, equal to the thickness of the stock of which the body of the type bar is made and preferably, as in the present case, is of a slightly greater diameter as appears clearly from Fig. 2 where the sides of the hole 6 are shown partly formed in each branch of the U-shaped piece 4.

Owing to the fact that in practice the hole for the type stem is drilled edgewise through the shank of the type bar for its Whole thickness and slightly beyond, means have been provided for reinforcing said shank and preventing the severed extremity from falling away or getting out of alinement with the body of the bar, which is necessary because the severed extremity forms about onehalf of the socket or perforation for the type stem. The means thus provided consists of the U-shaped head piece that is applied endwise of the body or shank of the bar and is spot-welded thereto prior to the drilling operation between the sides of the U-shaped piece, so that when the hole is formed for the stem of the type the weakened or severed extremity of the shank of the bar is maintained firmly in proper position and serves thereafter as a section of the type socket.

As is well understood in the art the roundshank type has advantages over other cona head formed of the said body. and also of 85 structions in which the shank is not round or substantially cylindrical. For example, the round-shank type greatly facilitates ease of adjustment and consequent accuracy of alinement. The present construction is especially adapted to round-shank printing types, and provides a particularly simple and desirable type bar and one which may be manufactured at a minimum of expense, labor and time. While all these desiderata are obtained, at the same time the present bar possesses all the advantages of the dropforged bar now almost universally employed where a perforated head .or socket is required for shanked or stemmed types of the general character herein shown and .de-' scribed. Y

The head of the type bar may readily be made of the desired weight by increasing or decreasing the length of the branches of the U piece; and as heretofore in other constructions of sheet metal bars the shank or body portion may be ribbed to stiffen it. Various other changes may be made without departing from my invention.

What I claim as new and desire to secure by Letters Patent, is

1. A type bar for typewriting machines comprising a body of sheet metal transversely at one end to provide a pivot hole, the body being of sufiicient thickness in itself to provide necessary stock for said pivot hole, said type bar further comprising two outer plies welded to the body, said head being drilled centrally edgewise of the three plies to provide a type socket, the socket being of a diameter at least as great as the thickness of the body, and the two outer plies being necessary to reinforce the-:body where said socket passes through it.

comprising a shank and a head, the former being composed of a single ply of sheet metal and the latter of three plies of sheet metal, and said shank being provided with a perforation extending therethrough parallel with said three plies, said'perforation being of a diameter substantially as great as the thickness of said shank, the two outer plies being necessary to reinforce the shank atthe point of perforation.

3. A sheet metal type bar for typewriting machines comprising a single ply' shank and a three ply head, said head being provided.

with a perforation extending parallel with said three plies and between the outer plies,

foration.

4. A sheet metal type bar for typewriting machines comprising a single ply.shank and a head composed of three plies in parallel- "ism and provided with a perforatiomformed edgewise of said plies and extending into the inner sides of the outer plies of the head,

and a type having a shank fitting said per-v and a type having a shank fitted in said perforation.

5. A sheet metal type bar for typewriting machines comprising a single ply shank and a head composed of three plies, the outer plies being formedv integral of a single -U- shaped piece of sheet metal applied and secured lengthwise of the shank, the head having a perforation which extends into all three plies, and the type stem of which fits said perforation.

6. A sheet metal type bar for typewriting machines consisting of a single ply shank and a three ply head, the middle ply of which consists of the outer end or extremity of the shank, and the outer plies of which consist of a U-shaped piece of sheet metal welded to the middle ply, said head being drilled centrally edgewise of said three plies to receive the shank of a 'printingtype, the drilled hole passing through the entire width of the middle ply, and the outer plies being necessary to prevent the end of the middle ply beyond said hole from falling away.

7. A sheet metal type bar for typewriting machines comprising a one-ply shank and a three-ply head, the outer plies consisting of an integral U-shaped piece, the bend whereof is fitted against the outer end or extremity of the inner ply, and the whole being welded togetherv and drilled through between the sides-of the U-sha d piece.

8. A type bar or typewritingmachines comprising a body portion of sheet metal, a

with a shank seated in said socket, said head 2.v A type bar for typewriting machines;

piece being necessary to reinforce said body portion where saidtype socket passes through said body portion.

9. type bar for typewriting machines comprising a body portion of sheet metal, a head piece made of stock of substantially the same gage as the body portion, said head piece embracing and being suitably secured to the type end of the body portion and forming with said type end a head which is provided with a round hole or socket having a diameter equal at least to that'of one of the plies of the head, and .a type block provided with a round shank suitably secured in said socket, said head piece preventing the end of the body portion beyond the round hole from falling away.

10. The method of making a type bar which consists in stamping out a blank for the body and of stamping and folding a hole in the head thus formed, said hole being of greater diameter than the thickness of the body portion and of securing a type block provided with a round shank to the 5 type bar by suitably fixing said rounded shank in said hole. 7

11. The method of making sheet metal type bars which consists in embracin extremity of the shank of the bar w th a 10 U-shaped blank, then spot-Welding the three plies together to form a substantially solid the 4 head, and then drilling said head as awhole edgewise of said plies to form a socket for Onondaga, and State of New York, this 28th day of- February, A. D. 1914.

ARTHUR J. BRIGGS.

Witnesses:

W. P. BRAND, J. CoLwAY.

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